Prometheus + Node_Exporter + Apache_Exporter + Grafana

prometheus-grafana

sudo apt update && apt upgrade -y
sudo apt install apache2 php php-mysql mariadb-server unzip wget
sudo apt install postfix apt-transport-https software-properties-common libapache2-mod-security2
sudo apt install -y php-curl php-imagick php-mbstring php-zip php-gd php-intl php-xml
sudo snap install aws-cli --classic

sudo a2enmod ssl
sudo a2enmod headers
sudo a2enmod status
sudo a2enmod authz_core
sudo a2enmod rewrite
sudo systemctl restart apache2
  
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wget https://github.com/prometheus/prometheus/releases/download/v2.47.0/prometheus-2.47.0.linux-arm64.tar.gz
tar xvfz prometheus-2.47.0.linux-arm64.tar.gz
sudo mv prometheus-2.47.0.linux-arm64 /opt/prometheus
sudo useradd --no-create-home --shell /bin/false prometheus
sudo chown -R prometheus:prometheus /opt/prometheus
sudo vim /opt/prometheus/prometheus.yml

-----------------------------------
global:
  scrape_interval: 15s
scrape_configs:
  - job_name: 'prometheus'
    static_configs:
      - targets: ['localhost:9090']

  - job_name: 'node_exporter'
    static_configs:
      - targets: ['localhost:9100']

  - job_name: 'apache_exporter'
    static_configs:
      - targets: ['localhost:9117']
-----------------------------------

sudo vim /etc/systemd/system/prometheus.service

-----------------------------------
[Unit]
Description=Prometheus
Wants=network-online.target
After=network-online.target

[Service]
User=prometheus
Group=prometheus
ExecStart=/opt/prometheus/prometheus --config.file /opt/prometheus/prometheus.yml --storage.tsdb.path /opt/prometheus/data

[Install]
WantedBy=multi-user.target
-----------------------------------

sudo systemctl daemon-reload
sudo systemctl enable prometheus
sudo systemctl start prometheus
sudo journalctl -u prometheus

  
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wget https://github.com/prometheus/node_exporter/releases/download/v1.6.1/node_exporter-1.6.1.linux-arm64.tar.gz
tar xvfz node_exporter-1.6.1.linux-arm64.tar.gz
sudo mv node_exporter-1.6.1.linux-arm64/node_exporter /usr/local/bin/
sudo useradd --no-create-home --shell /bin/false node_exporter
sudo chown node_exporter:node_exporter /usr/local/bin/node_exporter
sudo vim /etc/systemd/system/node_exporter.service

-----------------------------------
[Unit]
Description=Node Exporter
Wants=network-online.target
After=network-online.target

[Service]
User=node_exporter
Group=node_exporter
ExecStart=/usr/local/bin/node_exporter

[Install]
WantedBy=multi-user.target
-----------------------------------

sudo systemctl daemon-reload
udo systemctl enable node_exporter
sudo systemctl start node_exporter
sudo journalctl -u node_exporter
  
  
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wget https://github.com/Lusitaniae/apache_exporter/releases/download/v1.0.9/apache_exporter-1.0.9.linux-arm64.tar.gz
tar xvf apache_exporter-1.0.9.linux-arm64.tar.gz
sudo mv apache_exporter-1.0.9.linux-arm64/apache_exporter /usr/local/bin/
sudo chown root:root /usr/local/bin/apache_exporter
sudo useradd --no-create-home --shell /bin/false apache_exporter
sudo mkdir -p /etc/apache_exporter
sudo vim /etc/apache_exporter/apache_exporter.yml

-----------------------------------
access_log_path: /var/log/apache2/access.log
error_log_path: /var/log/apache2/error.log
web.listen-address: :9117
web:
  telemetry-path: /metrics
-----------------------------------

sudo chown apache_exporter:apache_exporter /etc/apache_exporter/apache_exporter.yml
sudo vim /etc/systemd/system/apache_exporter.service

-----------------------------------
[Unit]
Description=Apache Exporter
Wants=network-online.target
After=network-online.target

[Service]
User=apache_exporter
Group=apache_exporter
ExecStart=/usr/local/bin/apache_exporter --scrape_uri=http://127.0.0.1/server-status?auto
Restart=always

[Install]
WantedBy=multi-user.target
-----------------------------------

sudo vim /etc/apache2/sites-available/000-default.conf

-----------------------------------
<VirtualHost *:80>
    ServerName domain.com
    ServerAlias www.domain.com

    RewriteEngine On
    RewriteCond %{REQUEST_URI} !^/server-status$
    RewriteRule ^(.*)$ https://domain.com/$1 [R=301,L]

    <Location /server-status>
        SetHandler server-status
        # Require all granted
        Require local
        Require ip 127.0.0.1
    </Location>
</VirtualHost>
<VirtualHost *:443>
    ServerName domain.com
    ServerAlias www.domain.com

    DocumentRoot /var/www/html

    SSLEngine on
    SSLCertificateFile /etc/letsencrypt/live/domain.com/cert.pem
    SSLCertificateKeyFile /etc/letsencrypt/live/domain.com/privkey.pem
    SSLCertificateChainFile /etc/letsencrypt/live/domain.com/chain.pem

    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined

    <Directory /var/www/html>
        Options Indexes FollowSymLinks
        AllowOverride All
        Require all granted
    </Directory>
</VirtualHost>
-----------------------------------

sudo vim /etc/apache2/apache2.conf

-----------------------------------
...
<Directory /var/www/html/>
    Options -Indexes +FollowSymLinks
    AllowOverride None
    Require all granted
</Directory>
...
-----------------------------------

sudo systemctl restart apache2
systemctl status apache2.service
journalctl -xeu apache2.service

sudo vim /var/www/html/.htaccess

-----------------------------------
...
RewriteCond %{REQUEST_URI} !^(/(.+/)?feed/?|/(index.php/)?wp-json(/.*|$)|/server-status)$ [NC]
...
-----------------------------------

sudo -u apache_exporter curl http://127.0.0.1/server-status?auto

sudo systemctl daemon-reload
sudo systemctl enable apache_exporter
sudo systemctl start apache_exporter
sudo systemctl status apache_exporter
sudo journalctl -u apache_exporter


##########################################################

  
wget -q -O - https://packages.grafana.com/gpg.key | sudo apt-key add -
echo "deb https://packages.grafana.com/oss/deb stable main" | sudo tee /etc/apt/sources.list.d/grafana.list
sudo apt-get install grafana
sudo systemctl daemon-reload
sudo systemctl enable grafana-server
sudo systemctl start grafana-server
sudo journalctl -u grafana-server


##########################################################


sudo systemctl daemon-reload
sudo systemctl restart prometheus
sudo systemctl restart node_exporter
sudo systemctl restart apache_exporter
sudo systemctl restart grafana-server
sudo systemctl restart apache2


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